Re: Whats the sodium for?

["Fred Munro" <munrof@isys.ca>]

-----Original Message-----
From: Jay Rabe <brabe@snet.net>
To: quattro@coimbra.ans.net <quattro@coimbra.ans.net>
Date: Friday, May 29, 1998 11:36 AM
Subject: Whats the sodium for?


>In the turbo head the valves have sodium in 'em.  How does this allow
>you to run more boost?  Does it cool the valve better???
> Jay

Jay;

    When the valve heats up, the sodium melts and the liquid metal increases
heat transfer from the valve head to the stem, through the valve guides and
into the cylinder
head. The improved heat transfer allows sodium filled exhaust valves to run
cooler than standard exhaust valves.

HTH

Fred Munro
'91 200q  253k km